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Méthodes numériques avancées en vibroacoustique basses et moyennes fréquences

Abstract : This paper presents a synthesis of modeling and associated numerical methods for the prediction of linear vibrations of arbitrary structural-acoustic tridimensional systems constituted of a structure containing an internal dissipative acoustic fluid and surrounded by an external inviscid acoustic fluid occupying an unbounded domain. The model includes wall acoustic impedances. For low-frequency vibroacoustic problems, we present reduced matrix models based on Ritz-Galerkin projection of the finite element model using appropriate modal basis. Finally, for medium-frequency vibroacoustic problems, we present the finite element model and solving methods, i.e. a two time scales procedure and a method of construction of appropriate reduced matrix models.
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Contributor : Christian Soize Connect in order to contact the contributor
Submitted on : Sunday, December 16, 2012 - 10:28:32 PM
Last modification on : Friday, August 5, 2022 - 2:53:59 PM
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Roger Ohayon, Christian Soize. Méthodes numériques avancées en vibroacoustique basses et moyennes fréquences. Revue Européenne des Éléments Finis, HERMÈS / LAVOISIER, 1999, 8 (5-6), pp.607-637. ⟨10.1080/12506559.1999.10511399⟩. ⟨hal-00765801⟩



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